<template>
    <div class="app-container">
        <!-- 顶部 Header 区域 -->
        <mt-header fixed title="开心购">
			<span slot="left" @click="goBack" v-show="flag">
				<mt-button icon="back">返回</mt-button>
			</span>
		</mt-header>


        <!-- 中间的路由 router-view 区域 -->
		<transition>
			<router-view></router-view>
		</transition>
		

        <!-- 底部Tabbar区域 -->
        
        <nav class="mui-bar mui-bar-tab">
			<router-link class="mui-tab-item-wyf" to="/home">
				<span class="mui-icon mui-icon-home"></span>
				<span class="mui-tab-label">首页</span>
			</router-link>
			<router-link class="mui-tab-item-wyf" to="/member">
				<span class="mui-icon mui-icon-contact"></span>
				<span class="mui-tab-label">会员</span>
			</router-link>
			<router-link class="mui-tab-item-wyf" to="/shopcar">
				<span class="mui-icon mui-icon-extra mui-icon-extra-cart">
					<span class="mui-badge" id="badge">
						{{$store.getters.getAllCount}}
					</span>
				</span>
				<span class="mui-tab-label">购物车</span>
			</router-link>
			<router-link class="mui-tab-item-wyf" to="/search">
				<span class="mui-icon mui-icon-search"></span>
				<span class="mui-tab-label">搜索</span>
			</router-link>
		</nav>

    </div>
</template>

<script>
export default {
    data(){
		return{
			flag:true
		}
	},
	created(){
		//解决直接点击tabbar进入其他页签时有返回，但是页面一刷新，就没有了的问题
		this.flag = this.$route.path === '/home' ? false : true;
	},
	methods:{
	 	goBack(){
			//点击后退,
			this.$router.go(-1);
	 	}
	},
	watch:{
		'$route.path':function(newval){
			if(newval === '/home'){
				this.flag = false;
			}else{
				this.flag = true;
			}
		}
	}
    
}
</script>

<style scoped>
	.mint-header{
		z-index: 100;
	}
    .app-container{
        padding-top: 40px;
		padding-bottom: 50px;
		overflow-x: hidden;
    }

	.v-enter {
		opacity: 0;
		transform: translateX(100%);
	}

	.v-leave-to {
		opacity: 0;
		transform: translateX(-100%);
		position: absolute;
	}

	.v-enter-active,
	.v-leave-active {
		transition: all 0.5s ease;
	} 

	/**该类名，解决 tabbar 点击无法切换的问题*/
.mui-bar-tab .mui-tab-item-llb.mui-active {
    color: #007aff;
}

.mui-bar-tab .mui-tab-item-wyf {
    display: table-cell;
    overflow: hidden;
    width: 1%;
    height: 50px;
    text-align: center;
    vertical-align: middle;
    white-space: nowrap;
    text-overflow: ellipsis;
    color: #929292;
}

.mui-bar-tab .mui-tab-item-wyf .mui-icon {
    top: 3px;
    width: 24px;
    height: 24px;
    padding-top: 0;
    padding-bottom: 0;
}

.mui-bar-tab .mui-tab-item-wyf .mui-icon~.mui-tab-label {
    font-size: 11px;
    display: block;
    overflow: hidden;
    text-overflow: ellipsis;
}
</style>